I am so sorry to hear about Madeline.
Sounds like she was dearly loved.
As for Sabrina, that naughty girl, lol. If the vet is not concerned I would continue to keep an eye on her poops to make sure there is no fresh blood or dark stools.
Cat maid to:
Jasper, male Ragdoll ?? (approx 10 yrs)
Sweet Pea, female silver tabby DSH (approx 8 yrs)
Rose semi feral, a cpietra rescue, female tabby (approx 7 yrs)
Puddles RIP (1996-2014
Snowball RIP (1991-2005)
In a cat's eye, all things belong to cats.-English Proverb
“While we are free to choose our actions, we are not free to choose the consequences of our actions.” Stephen R. Covey